201991955

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{333871}}^1$

素因数の和:333898

約数の個数: 12

約数和(自身を含む): 266429856

約数和(自身を除く): 64437901

約数列:

[1, 5, 11, 55, 121, 605, 333871, 1669355, 3672581, 18362905, 40398391, 201991955]

約数ペア:

[(1, 201991955), (5, 40398391), (11, 18362905), (55, 3672581), (121, 1669355), (605, 333871)]